The LNER’s ‘Tourist Stock’, both teak and plywood bodied, were originally fitted out with the infamous bucket seats. It’s said they induced neck and back ache on the longer journeys. The internal lights were naked tungsten lamps which made things appear rather austere.
But I feel most people would not have been too bothered as long as the train took them to B from A.
Of course, the first carriages, and this continued right up to the BR Mk1 stock, were non gangwayed with the compartments right across the full width of the carriage. Hence women could be raped in them, amongst other crimes, including murder. So open carriages it had to be for everyone’s safety. So no non gangwayed diagrams from Mkll and onwards.